Wire-drawing machine



Dec. 24, 1940. I F. w. GAINES. so

' WIRE-DRAWING MACHINE Filed May 21, 1936 '3 Sheets-Sheet 1 I NVENT OR.fimEfi/c/r M 640%: 3

Jg/tle Mm 45%;

ATTORNEYS 2,22 6,400 5 Sheets-Sheet 2 I l I INVENTOR. fkzoffi/c/r M640%: 3-

ATTORNEY Dec. 24, 1940. F. w. GAINES, so

WIRE-DRAWING MACHINE Filed May 21, 1936 Dec. 24, 1940. F. w. GAINES, an

WIRE-DRAWING MACHINE Filed llay 21, 1936 3 Sheets-Sheet 3 fawfiaam 4MATTORNEYS Patented Dec. 24, 1940 UNITED STATES PATENT OFFICE WIRE-DBAWING MACHINE Application May 21, 1936, Serial No. 80,973

23 Claims.

This invention relates to an improved wiredrawing machine of the typeadapted to operate as an attachment to a metal fabricating machine.

The present invention is an improvement over the wire-drawing machinedisclosed in Patent No. 1,934,446, issued November 7, 1933.

An object of my invention is to provide an improvedwire-drawing'machine, of the type mentioned, having novel inchingmechanism for starting the wire stockor rod through the die.

Another object of the invention is to provide an improved wire-drawingapparatus, of the type referred'to, having a reciprocating wire drawingdie and novel means for actuating the same. a

A further object of the invention is to provide an improved wire-drawingmachine, of the type referred to,'having novel means for operating theinching mechanism from the same power means which operates thereciprocating die.

Still another object of my invention is to provide an improvedwire-drawing machine, of the type referred to, having novel means forstraightening the stock before it passes to the wire-drawing die.

improved mounting means for a wire-drawing die to facilitate accessthereto for cleaning the drawing orifice or for replacing the die.

The invention may be further briefly summarized as consisting in certainnovel combinations and arrangements of parts hereinafter described andparticularly set out in the appended claims.

In the accompanying drawings- Fig. l is a side elevation of an improvedwire- :;5 drawing machine embodying my invention;

Fig. 2 is a top plan view thereof;

Fig. 3 is an end elevation, with portions broken away, showing the endof the machine at which the'stock enters;

Fig. 4 is 'a transverse sectional view of the machine taken on line 4--4 of Fig. 1;

Fig. 5 is a partial longitudinal sectional view through the die seat andpowder box as indicated by line. 5-5 of Fig. 2;

Fig. 6 is a partial longitudinal sectional view taken on line 6-6 ofFig. 2 and showing a part of the inching mechanism; 7

Fig. '7 is a partial side elevation of the main operating lever andshowing a modified form of connection between this member and the mainactuating rod;

Fig.8 is an end view further illustrating this,

modified form of connection, and e .Fig. 9 is a partial longitudinalsectional view It is also an object of my invention to provide showinganother form of stock straightening means which may be embodied in mywire-drawing machine.

In the accompanying drawings to which more detailed reference will bepresently made I have shovm one embodiment of the improved wiredrawing.machine of my invention. While the machine herein disclosed representswhat I now regard to be a preferred form of my invention, it should beunderstood, however, that the, invention may be embodied in variousother wire- 1 drawing machines and apparatus.

The wire-drawing machine here under consideration is of the type adaptedto be used as an attachment for a header or other metal fabricatingmachine and operates on the stock, in this instance, the rod or wire Sbeing supplied to the fabricating machine. The fabricating machine maybe one of the type having a pair-of intermittently operating powerdriven feed rolls i5 and a power shaft with which a power take-offmechanism can be connected for the operation of my wire-drawingattachment through the reciprocating main actuating rod I6. Theoperating connection between the wire-drawing attachment and'thefabricating machine may also include an adjustable means capable ofvarying the length of stroke of the actuating rod l6 from job to job tosuit the length of wire blank the fabricating machine is using. It isdeemed unnecessary to illustrate or further describe the fabricatingmachine since the general combination of such a machine and awire-drawing attachment is disclosed in the prior patent mentionedabove.

As shown in Fig. 1 my improved wire-drawing machine comprises, ingeneral, a frame [8 anda plurality of mechanisms operatively mountedtheredn. These mechanisms include a stock straightening device IS, aninching mechanism 20 for use in. feeding a new end of stock through themachine, an adjustable inching-grip 20A for holding a new end of stockduring introduction into the drawing die, a reciprocating wire-drawingdie mechanism 2| which operates on the stock, and a stock grippingdevice 22 for preventing backward movement of the stock during a workingstroke of the die. a

Any suitable frame may be provided for operatively supporting thesemechanisms, such as the frame I8 illustrated in this instance, which isprovided at the top thereof with a guideway 24 extending in thedirection of feed of the stock S. The die mechanism 2| and the inchingmechanism 20 are provided with slides which are movable along thisgui'deway, as will be presently explained.

The die mechanism 2i comprises a slide 25 having lateral projections 28which operate in the guideway 26 and are retained therein by the gibplates 2'17. The slide 25 is provided with a portion 28 forming a seator mount for a wiredrawing die 29. The die may be mounted on the portion28 by providing the latter with a suitable opening or recess in whichthe die is retained by the set screw 38.

The slide is constructed with a chamber therein which provides a box orcontainer at for holding a supply of metal-working powder or compound.This chamber extends downwardly in front of the die orifice, as shown inFig. 5, so that the stock moves through the compound before passingthrough the die 29. The slide is also provided with openings 33 and 35which communicate respectively with the powder box and the die orifice.The opening 33 is relatively large and is located adjacent the bottom ofthe chamber so that the removal of a cover 35 fitting therein, permitsused powder or compound to be readily discharged from the powder boxthrough this opening and affords access to the drawing die for removalor for cleaning an objectionable accumulation from the throat of the dieorifice. The cover35 is provided with a central bushing 36 through whichthe stock S passes and is normallyretained in the opening 33 by a clampplate 3i which also has a central opening. The ends of the clamp plate31 may be provided with slots which cooperate with studs 38 to form abayonet-type connection permitting quick removal of the cover 35. Theopening 3 which extends in the opposite direction from the die orificemay, if desired, be fitted with a bushing 39 which is retained thereinby the set screw 60. An opening may be provided into the top of thepowder box 3i for introducing the powder or compound thereinto and suchopening may be closed by a removable cover tl normally held in place bythe bail-type latch 52.

At opposite sides of the opening 3 3 the die slide may be provided withsubstantially vertically disposed fiat contact faces tit which areengaged by rounded cam portions t formed on upwardly extending laterallyspaced arms @511. of a pivoted actuating lever dB. This lever is-pivoted intermediate its ends on a transverse shaft 41 of the frame sothat swinging of the lever about this pivot shaft in a counter-clockwisedirection will cause the die slide 25 to be moved along the guideway 26toward the left as seen in Fig. 1. The lower end of the main actuatinglever 46 has a pivotal connection with the actuating rod it so thatreciprocation of this rod will cause the desired swinging of the leverabout the pivot fill. The length of stroke through which the die slideis moved by the lever 36 may be varied by adjustment of the strokeimparted to the rod 16 from the fabricating machine.

The die slide 25 may also be provided with one or more dependingintegral brackets 59 with which a transversely extending bearing plate5! is connected. Pairs of push rods 52 and 52a are connectedrespectively with the plate 5i and the die slide and extend laterallysubstantially parallel with the guideway 2t. These push rods are of alength to extend outwardly through the end of the frame It forconnection with the stock straightening device l9 so that movementgfviiihe die slide also actuates the straightening e ce.

aaaaaoo At a point between the straightening device it and the die slide251 provide the pair of push rods 52 with flanged sleeves 53 which areslidable on the rods and with sleeves 56 which may be anchored to therod by means of a transverse pin 55. Each of thesleeves 53 forms a seatwhich is engaged by one endof a coil spring 55. The springs 56 aredisposed around the push rods 52 with their other ends engaging thetransverse bearing plate M of the die slide. The springs 56 are held ininitial compression by the sleeves 56 and, during the normal working ofthe machine, are further compressed during movement of the die slidetoward the left by the lever 36 so that, upon swinging of the lever inthe opposite direction, they urge return movement of the die slide, thatis, movement toward the right as seen in Fig. 1. Such furthercompression of the springs follows the engagement of the slidablesleeves 53 with the stops which are hereinafter referred to as forkedarms M15. It is desirable to have the springs 56 compressed by the slideduring normal working of the machine but not during inching, andtherefore, as will be explained more in detail hereinafter, the stopsare shiftable into and out of position to be engaged by the sleeves 53.

The gripping device 22 is mounted on the frame it at the end thereofnearest the feed rolls 95 of the fabricating machine. This grippingdevice may be of any suitable construction or form such that it willgrip and hold the wire while the die this being moved toward the leftalong the stock by a corresponding movement of the die slide. Duringreturn movement of the die and die slide toward the right the device 22releases its grip on the stock so that the stock can be pulled forwardby the feed rolls I5. Duringsuch advance movement of the stock by thefeed rolls l5 the springs 56 help to return the die slide so that thelatter, in effect, floats with the stock instead of acting as a dragwhich might overload the feed rolls.

The gripping device may be of the form of construction disclosed inprior Patent No. 2,018,211, issued October 22, 1935, which in generalcomprises a pair of tapered complemental gripping blocks or dies 58.Rollers 59 are disposed between the tapered faces of these blocks andtapered faces of abutment members 80 such that any backward movement ofthe stock causes the blocks to be wedged toward each other and to firmlygrip the stock.

Provision may be made for manually releasing the gripping device 22whenever this may be desirable. This manual means may consist of apivoted lever 6i having a forked lower end which straddles the stock andengages the blocks 58 to shift the same in a direction to release theirgrip on the stock.

The stock straightening device it is connected with the die slide 25 bythe push rods 52 and 52a, as explained above, so that reciprocation ofthe die slide by the action of the lever it and the springs 53 willcause reciprocation of the straightening device. This device maycomprise a body the bushing 63 over the stock which is at that timebeing held against backward movement by the gripping device 22. Thisoutward movement of the bushing over the stock performs a straighteningoperation thereon. Y

The straightening device [8 may, if desired, be provided with one ormore pairs of grooved straightening rolls 64. When the rolls 64 areprovided they are arranged in. complemental relation to act on oppositesides of the stock and may be supported in an \outwardly projectingbracket-like extension 65 of the body member 82. In some instances thestraightening rolls 64 are omitted, in which case the straighteningdevice l9 is provided only with a straightening bushing 83 as shown inFig. 9.

As already mentioned, my improved wire-drawing machine includes aninching mechanism 28 for starting the stock through the drawingdie 2 9.This inching mechanism comprises a pair of slides 61 and 68' which areoperable in the guideway 24 and each of which carries a stock grippingdevice. The slide or may be referred to as the inching feed slide andthe slide 68 may be referred'to as the inching grip slide. The slidesBil-and 68 may be generally similar in constructionand likewise thestock gripping devices carried thereby may be substantially identical inconstruction and'operation. To avoid repetition I-shall describe onlythe gripping device of the inching feed slide.

As shown in Fig. 6 of the drawings, this gripping device comprises apair of cooperating fingers 89 and Hi which are pivoted respectively atH and 12. These fingers are provided at their adjacent ends witharcuately extending complemental grooves 13 which are of tapering orvarying depth such that when the fingers are swung upon their pivots inone direction the rooves will be brought into gripping engagement withthe stock S, and when the fingers are swung in the opposite directionthe grooves will release the stock. For retaining the gripping portionsof the fingers in the desired complemental relation and for insuringsimultaneous arcu-ate movement thereof, I provide the fingers withintermeshing gear sectors 14. These gear sectors may be mounted on thefingers at one side of the grooved gripping portions it with the teethofthe sectors extending outwardly beyond the gripping portions intomeshing relation with each other. One of the fingers, for example thefinger to, may be provided with an actuating handle or lever it whichextends outwardly so that it may be conveniently grasped by theoperator.

The tapered grooves it of the gripping portions of the fingers arearranged, as shown in Fig. 6, such that when the lever is is swung to avertical position indicated by the broken line lit, the stock. will befirmly gripped and when the fingers are in a position corresponding withthe full line position in which the handle it is shown in Fig. 6, thestock is released. it may be desirable to provide means normally urgingthe fingers into gripping engagement with the stock, and for thispurpose I provide the slide with a hollow projection it in which aplunger it is slidahly operable. A compression spring 5% disposed in thehollow projection normally urges the plunger outwardly so that it willtend to swing the handle iii from its released position toward itsgripping position lit. The plunger lit may be restricted as to its limitof travel and held against complete disengagement from the projection 18by means of the rod 8|.

The inching mechanism 28 is put in use only when stock is to be startedthrough the die, and hence is inoperative during the normal working ofthe machine. To prevent wear upon the fingers of the gripping devices ofthe inching slides 81 and 68 by the passage of the stock during normalworking, I may provide means for normally holding the gripping fingersin their released position as illustrated in Fig. 6. This retainingmeans may be in the form of a locking bolt 83 which is slidable in ahollow guide portion 84 carried by the slide. A compression spring 85disposed in the hollow portion 84 normally urges the bolt 83outwardly toa position of locking engagement with the handle 15 as illustrated inFigs. 2 and 6. The bolt 83 may be provided with an extension part 88adapted to be grasped by the operator for retracting the bolt when thehandle 15 is to be swung or released for movement of the fingers intogripping engagement with the stock.

The inching feed slide 61 is movable in the guideway 24 so that whenthestock is gripped bythe gripping device of this slide and the slide 'ismoved toward the right as seen in Fig. 1, the

stock will be advanced a distance corresponding with the travel of theslide. For causing such feeding movement of the slide 61 I provide anactuating or feed link 88 which is disposed in a hollow portion of theframe I8 beneath the guideway 24. One end of this link extends upwardlyand is pivotally connected with the slide 61 by means of the pivot pin89. The other end of the feed link 88 extends between the spaced arms ofthe actuating lever 46 and is provided with a transverse notch orhook-like opening 98 for engagement with a pin or the like 9! extendingtransversely between the arms of the actuating lever. When the feed link88 is lowered to its broken line position 92 (Fig. 1) to bring thetransverse opening into engagement with the transverse pin 9|, a drivingconnection is estab-' lished between the actuating lever 46 and the feedlink. It will be noted in this connection that the transverse pin BI isrelatively close to the pivot shaft 41 of the actuating lever 46 so thatrocking of this lever imparts a relatively shortstroke movement to thefeed slide 61. The length of this stroke may be varied as desired, byproviding the spaced arms of the lever 46 with other openings 93 towhich the connecting pin 9i may be shifted. The closer the pin 9! islocated to the axis of the pivot shaft ll, the shorter will be r thestroke of the feed slide.

The slide fit of the inching grip device 20A is also movable along theguideway 2 8, as mentioned above, but such movement is desirable onlyfor the purpose of adjustably locating the inching grip relative toother parts of the machine. The need for adjustment of the inching gripslide arises from the fact that the stroke of the die slide is variedfrom time to time to suit the length oi wire blank being used by thefabricating machine and, because it is desirable to have the inchinggrip slide as close as possible to the extreme end of the drawing strokeof the die slide, it is important to provide for adjustment-of theinching grip slide. The reason why it is desirable to have the inchinggrip located close to the extreme end of the drawing stroke, is toreduce to a minimum the rod length which is unsupported during inchingbecause an unreasonably long length of rod would buckle. As

the stroke a connected from the pin 8|.

of the die slide is varied, it frequently becomes necessary to vary thestroke of the inching feed slide, and this isdone by shifting theconnection between the feed link 88 and the lever t6 toward or from thepivot axis t'i as explained above.

When the inching grip slide 68 has been moved to a desired position ofthe guideway 24 which, as just explained, may be a position relativelyclose to one limit of travel of the die slide 25, it is desirable toclamp the inching grip slide in. such adjusted position. For thispurpose I provide opposite outer edges of the slide 68 with racksections 95 which are adapted to be engaged by locking members 96 alsoin the form of rack sections. The rack sections 96 may be carried byactuating screws 91 which are mounted on the frame I8 so that bymanipulation of these screws the rack sections can be moved inwardlyinto locking engagement with the racks of the slide 68 or can be movedoutwardly to be disengaged from the racks of the slide. Thus, by thismeans the inching grip slide can be locked'and held in a desiredposition of adjustment along the guideway 24.

I have already mentioned the fact that the inching mechanism 20 is to beused only when stock is being started through the die 28, and hence itis desirable to provide means for disconnecting the feed link 88 fromthe actuating lever 46 so that the inching feed slide 61 need not beoperated except for inching purposes. Suitable means for disconnectingthe link 88 from the lever 46 may consist of a manually operable lever99 connected with a transverse pivot shaft I and a latch member IOIconnected with the pivot shaft to be moved thereby into liftingengagement with the feed link 88. The latch IN is preferably such thatwhen it has been moved into engagement with the feed link to disengagethe latter from the pin 9|, a lug 99' engages a stop on the frame I8 andthe latch assumes a dead center position with respect to the pivot shaftI00, as illustrated in Fig. 1, and. the feed link 88 will be held in itselevated position dis- When it is desired to have the inching slide 61operate, the lever 89 is swung toward the right as seen in Fig. 1,thereby moving the latch IOI to its lower broken-line position I02 andthus lowering the feed link"88 for connection with the pin 8 I.

When the inching mechanism 20 is being operated, it is desirable thatthe springs 56 shall not act on, the die slide 25 so as to permit thedie slide to be operated through only a short travel of stroke along aworking section of the guideway near the inching grip slide 68. To thusrender the compression springs 56 inefl'ective I employ the movablestops in the form of forked arms I05, which are shiftable into and outof cooperation with the flanges of the sleeves 53 of the push rods 52.The forked arms I05 are carried by a bell crank I06 such that byswinging of this lever on its pivot I01, the arms can be moved into orout of position to be engaged by the flanged sleeves 53 of the pushrods. For moving the stops I05 into their operative position, shown infull lines in Fig. 1, I' provide the lever I06 with a forwardlyextending arm I08 which is adapted to be engaged and actuated by anextension I08 of the latch member IN. A tension spring IIO, having oneend thereof connected with the lever I06 and its other end anchored onthe frame I8, acts on this lever normally tending to swing the stops I05to their inoperative broken line position III. Since the extension I09and the latch member aaaaaoo WI are both actuated by the lever 89, itwill be seen that movement of this lever in a direction to lower thefeed link 88 for connection with the lever 66 will simultaneouslydisengage the extension IEIQ from the arm I08 and permit the spring M0to shift the stops I05 to their inoperative position. When the springs56 have been thus rendered inefiective, the die slide 25 is returned,following each of its working strokes, by the forward movement impartedto the stock by the inching feed slide 67. In other words, during theoperation of the inching mechanism, the die slide 25 is moved toward theinching grip slide 68 by the lever 46 as this lever moves through thelatter portion of its swing, and this movement of the die slideconstitutes a working stroke which causes the die to be forced over thestock while the stock is being held against backward movement by thegripping device of the slide 68. When the lever 46 is swung in theopposite direction, that is, in a clockwise direction, the feed link 88causes the inching feed slide 61 to move in the same direction to feed asection of the stock forward through the inching grip device of theslide 68. This same forward movement of the stock returns the die slide25 preparatory to another working stroke thereof during the succeedingswinging movement of the lever 46.

When the inching mechanism has been operated for a long enough period tocause the advancing stock to extend through the gripping device 22 whichholds the stock against backward movement during drawing, it is nolonger necessary to hold the stock with the inching grip 68 or to pushthe stock forward by short steps with the inching feed slide 61. Itisdesirable that the leading end of the stock be inserted with as littledelay as possible between the feed rolls I5 of the fabricating machine,and for this purpose I provide manual means for shifting the die slide25 as far forward as permitted by the swing of the operating lever 46 tothereby bring the leading end of the stock into the feed rolls. Thismanualmeans may consist of a lever II3 which engages the transversebearing plate 5I of-the die slide and is connected to a transverse pivotshaft III. Actuation of the lever H3 to cause this forward movement ofthe die slide and the stock, may be caused by rocking the pivot shaft II4 by means of a suitable handle I I5.

I have already stated that the reciprocating actuating rod I6 haspivotal connection with the actuating lever 46 and that its stroke isvariable by adjustable driving means connected to the fabricatingmachine and, as one of the features of my invention, I provide a novelarrangement for this pivotal connection. It is desirable in a machine ofthis type that an overload release be provided so as to prevent breakageof the ap paraitus in the event that an overload occurs, as for example,through interference between the die slide 25 and the inching grip slide68 resulting from improper setting of the grip slide with reference tothe travel of the die slide or through the stock having folded up andaccumulated into an obstruction between the two slides. This overloadrelease is, in this instance, embodied in the novel pivotal connectionbetween the lever 46 and the rod I6. The overload release may consist ofa frangible element or shear pin III mounted in bushings II8 carried bythe lower end of the lever 46. The pin also extends through a bushing II8 carried by an extension part I20 of the actuating rod I6 and thusalso acts as the pivot pin. When an overload occurs the pin H1 issheared and this prevents breakage of the apparatus at some other point.

The novel feature of the pivotal connection between the lever 46 and therod I6 consists in the means for preventing the rod from dropping downand digging into the floor or causing other damage when the pin II! issheared. This means consists in extending the part I20 beyond the axisof the shear pin 'I I! for a distance greater than the maximum workingstroke of the rod I 6, and in providing the lower end of the lever 46with a stirrup-like part Hi. When the pin II! is sheared the extensionpart I20 will drop into engagement with the stirrup part I2I and will besupported by this part even though the operating ro'd I6 continues to bereciprocated by the power device with which it is connected.

In Figs. 7 and 8 of the drawings I have shown another novel form ofpivotal connection which may be provided between the actuating rod I6and the lever 46. In this latter connection I form the lower part of thelever 46 of two sections I22 and I23, the former of which is an integralpart of the lever and the latter of which is a movable part. This latterpart may be connected with the lever as by being mounted upon a bushingI24 extending through the pivot opening of lever 46 by means of apivotal connection I26 provided between the rod and the lever sectionI23. When an overload occurs the bolt I25 breaks and permits the leversection I23 to swing on the bushing I24 and thus reciprocation of therod I6 may continue without causing movement of the lever 46.

From the foregoing description and the accompanying drawings it will nowbe readily seen that I have provided an improved wire-drawing machinewhich is adapted to serve as an attachment for a header or other metalfabricating machine to which stock is supplied in the form of a wire orrod. It will be further understood that this improved wire-drawingmachine embodies numerous novel features which enable it to operateeiiiciently on the stock being supplied to the fabricating machine, andwhich provide for the power operation of an inching mechanism where by anew length of stock can be quickly started through the drawing die andthe feed rolls of the fabricating machine.

While I have illustrated and described my improved wire-drawing machinein a somewhat de tailed manner, it should be understood that I do notwish to be limited to the precise details of construction andarrangement of parts herein disclosed, but regard my invention asincluding such changes and modifications as do not constitute adeparture from the spirit of the invention and,

scope of the appended claims. I

Having thus described my invention I claim:

1. In apparatus of the class described the combination of a reciprocablewire-drawing die, and an inching mechanism for starting wire stockthrough said die comprising a reciprocable stock feeding device operableto intermittently advance the stock, a gripping device between the dieand the feeding device operable to intermittently grip said stock forpreventing backward movement of the stock and power means operable tocause reciprocation of the feeding device and die.

2. In apparatus of the class described the combination of a movablewire-drawing die, a gripping device for preventing backward movement ofwire stock being started through the die, power means operable to move.the die toward the gripping device to cause the same to traverse thestock, and stock feeding means disposed on the same side of the die assaid gripping means and actuated by said power means, said feeding meansbeing operable to advance the stock and to cause return movement of thedie.

3. In apparatus of the class described the combination of a movablewire-drawing die, a movable device for feeding wire stock toward thedie, a gripping device between the die and feeding device for preventingbackward movement of the stock, means for causing intermittent workingstrokes of the die toward the gripping device, and common operatingmeans for actuating said movable device to intermittently advance thestock and for causing return movement of the die.

4. In apparatus. of the class described the combinati'on of areciprocable wire-drawing die, power means operable to cause a workingstroke of the die, and an inching mechanism for cooperation with the diein causing stock to be started through the latter comprising a. grippingdevice operable to hold the stock during the working stroke of the dieand a reciprocable feed device actuated from said power means andoperable to advance the stock and cause return movement of the die, saidfeed device being on the same side of the die as said gripping deviceand itself having means for gripping the stock.

5. In apparatus of the class described the combination of a reciprocablewire-drawing die, power means operable to cause a working stroke of thedie including a pivoted lever, an inching mechanism for cooperation withthe die in causing stock to be started through the latter including areciprocable feed device movable toward and from the die on the startingside thereof, and operating means connected with said feed device andwith said lever adjacent its pivot point whereby intermittent relativelyshortstroke movements may be imparted to the feed device.

6. In apparatus of the class described the combination of a frame havingthereon a reciprocable wire-drawing die, power means operable to cause aworking stroke of the die including a lever pivoted on said frame, aninching mechanism for cooperation with the die in causing stock to bestarted through the latter including a reciprocable feed device movableon the frame, an actuating link connected with said feed device, andmeans for adjustably connecting said link with said lever at varyingdistances from the pivot point of the latter.

ment of the die, and means for adjustably positio ning said grippingdevice with respect to the end of the working stroke of the die.

8. In apparatus of the class described the combination of a reciprocablewire-drawing die, power means operable to cause a working stroke of saiddie, inching mechanism toward which the die is moved during its workingstroke comprising means operable for feeding and holding, at relativelytimed intermittent intervals, stock being started through the die, andmeans connecting said inching mechanism for actuation by said powermeans.

9. In apparatus of .the class described the combination of areciprocable wire-drawing die, power means operable to cause a workingstroke of said die, inching mechanism toward which the die is movedduring its working stroke comprising means operable for feeding andholding, at relatively timed intermittent intervals, stock being startedthrough the die, means connecting said inching mechanism for actuationby said power means, and manually operable means for rendering the lastmentioned means inefiective.

10. In apparatus of the class described the combination of areciprocable wire-drawing die, means for causing a working stroke of thedie, gripping means for holding the stock during such working stroke,feeding means operable to advance the stock, and a spring arranged to bestressed during the working stroke' of the die and to cause returnmovement of the die during feeding of the stock.

11. In apparatus of the class described the combination of areciprocable wire-drawing die, means for causing a working stroke of thedie, gripping means for holding the stock during such working stroke,feeding means operable to advance the stock, a stop having a workingposition spaced from said die, a spring adapted to be compressed againstsaid stop during the working stroke of the die and to cause returnmovement of the die during feeding of the stock, said stop being movableinto and out of such working position.

12. In apparatus of the class described the combination of areciprocable wire-drawing die,

- means for causing a working stroke of the die,

inching means cooperating with the reciprocat ing die in causing stockto be started through the latter, means for causing operation of saidinching means, spring means operable to return the die after a normal.working stroke thereof, and manually operable means for substantiallysimultaneously rendering the inching operating means efiective and thespring return .means ineffective.

13. In apparatus of the class described the combination with afabricating machine having a stock feeding device, a wire, drawercomprisinga reciprocable wire-drawing die, means operable at one side ofsaid die for feeding and holding wire stock, means operable to causeworking strokes of the die for starting the stock therethrough, agripping device at the other side of said die, and means for manuallyshifting the die toward said gripping device and moving the drawn stockthrough the latter and into engagement with said stock feeding device.

14. In apparatus of the class described, a wiredrawing die, meansoperable to cause relative movement between wire stock and said dieincluding a pivoted member and an actuating member, one of which has anopening therethrough and the other of which has an extension partpassing through said opening, and a frangible element normallyconnecting said members.

15. In apparatus of the class described, a reciprocable wire-drawingdie, a pivoted lever connected with said die and having an arm providedwith an opening, a reciprocating actuating rod having an extension partextending through said opening, and a shear pin connecting saidextension part and said lever arm, said extension part being of greaterlength than the stroke of the actuating rod.

16. In apparatus of the class described a wiredrawing die, meansoperable to cause relative movement between said die and wire stockextending therethrough including a lever and an actuating rod, and meansconnecting the lever and rod comprising a frangible member and 00-operating portions of the lever and rod adapted to prevent completeseparation thereof upon breaking of said member.

17. In apparatus of the class' described the combination of areciprocable wire-drawing die,

a straightening device connected with said dieat 18. In wire drawingapparatus the combination of a reciprocable wire-drawing die, areciprocable wire-straightening means engaging the stock ahead of thedie, power means operable to move said die and said straightening meansin. the same direction through a working stroke, and feed means operableto advance the stock after such working stroke.

19. In wire drawing apparatus the combination of a reciprocablewire-drawing die, a reciprocable wireestraightening means engaging thestock ahead of the die, power means operable to move said die and saidstraightening means in the same direction through a working stroke, feedmeans operable to advance the stock after such working stroke, and meansfor causing a return stroke of the die and straightening means includinga spring arranged to be tensioned during the working stroke.

20. In wire drawing apparatus the combination of a frame having areciprocable die slide and a reciprocable feed\device thereon, a diecarried by said die slide, gripping device between the ieed device and$6 die slide for preventing backward movem of the stock, and meansoperable to cause working strokes of the die and relatively short-strokefeeding movements of the feed device including a movable 'member adaptedto engage the die slide during a portion of the movement of such memberand to disengage the die slide during another portion of the movement ofsuch member.

21. In apparatus of the class described, a reciprocating wire-drawingdie, a lever adapted to be swung to cause reciprocation of said die, areciprocable power member for swinging the lever, said lever having anopening therein and a transverse stirrup-like means at the lower end ofsuch opening, an extension part on said power member projecting throughsaid opening, and a frangible pin extending through said extension partand lever, said extension part being of greater length than the normalstroke of the power member.

' 22. In mechanism of the class described, a.

engaging jaws, a reciprocating carrier for said jaws betweensaidstraightening means and die, means within said carrier operableautomatically upon reciprocation of said carrier to alternately grip andrelease the work, and oscillating means 5 for reciprocating saidcarrier.

. FREDERICK W. GAINES, 3RD.

